python OpenCV 调用罗技摄像头方法说明

1.首先,需要安装opencv库文件,可以通过PIP install opencv-python(scripts目录下安装);

 

2.其次,验证安装版本pip list;

 

3.验证能否打开摄像头,实例如下(亲测可用):

import cv2

cap = cv2.VideoCapture(0)

while True:

  ret,frame =cap.read()

  cv2.imshow('frame',frame)

  if cv2,waitKey(1) == ord('1'):

    break

cap.release()

cv2.destroyAllWindows()

 

4.验证可以录制视频并保存在指定路径下,实例如下(亲测可用):

import cv2

import matplotlib

import numpy

import os

global now_time

cap = cv2.VideoCapture(0)

fourcc = cv2.VideoWriter_fourcc(*"MJPG")

out = cv2.VideoWriter("C:\\A\\output.avi",fourcc,25.,(640,480))

while(cap.isOpened()):

  ret,frame =cap.read()

  if ret:

    out.write(frame)

    cv2.imshow('frame',frame)

    if cv2,waitKey(1) == ord('1'):

      break

  else:break

cap.release()

out.release()

cv2.destroyAllWindows()

 

posted on 2019-09-11 16:22  newp  阅读(1309)  评论(0)    收藏  举报